Missing DLL

[gasMask]

Windows 10 64 bit, GIMP 3 RC1 

Hi,

I just installed GIMP 3 RC1. The first thing I did was hook up a pattern folder in the Preferences dialog.
   

When I restarted GIMP 3, I get a slew of repeated errors, one for each file I suppose, listed in the console.
   
Is this an issue? Do I need to report it? Is there a fix?

Thanks for your attention.
Charles